Gig-mill



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' GIG MILL.

No; 465,345; Patented De0. 15, 189 1,

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' -GI G MILL.

UNITED STATES PATENT OF ICE.

WARREN H. OLOUGH AND HAMILTON O. MANNING, OF LOWVELL, MASSACHUSETTS.

GIG-:MILL.

SPECIFICATION forming part of Letters Patent No. 465,345, dated December15', 1891 Application filed August 22, 1891. Serial No 403,418- (Nomodel.) 7

To aZZ whom it may concern: Be it known that we, WARREN H. CLOUG andHAMILTON O. MANNING, citizens of the United States, residing at Lowell,in the county of Middlesex and State of Massachusetts, have inventedcertain new and useful Improvements in Gig-Mills, of which the followingis a specification, reference being had therein to the accompanyingdrawings.

Figure 1 is an end elevation of a gig-mill. Fig. 2 is a side elevationthereof, parts being broken away. Fig. 3 is a partial view of one of thedrum-heads. Fig. 4.- is a detached view, enlarged, of part of the mill.Fig. 5 is avertical transverse section on line a: of Fig. 4. Fig. is apartial section, enlarged, on line X X, Fig. 4-. Fig. 6 is a horizontalsection on line 'y y, Fig. 4. p This invention relates to theconstruction of parts for driving the teaseling-rollers of a gig-mill,its object being to provide means whereby the rolls shall be driven notpositively: but by means of friction devices, so

- that, although the driver moves continuously,

any of the teaseling-rollers may slacken its speed of rotation, or theirrotation'may be 1nterrupted in case of the engagementoftheir workingfaces (whether teasels or cards) meeting with any obstruction.

So, also, the frictional contact between the parts ofthe rotatingmechanism may be so adjusted that the teaseling may be varied, accordingto the character of the work to be done in raising the nap.

Like reference-letters refer to similar parts in all the figures.

A A is the frame upon which the operative.

parts are supported. J

B is the shaft, and O C the heads of a drum mounted upon the frame.

c c are bearings, at suitable distances apart, around the peripheries ofthe drum-heads.

D D are teaseling rollers provided with cards or teasels, preferablyupon spiral lines, as shown in Fig. 7, with their journals mount ed inthe bearings c c. (1 cl are pulleys on the I outer ends of the journalsof these rollers.

As the frame, the drum, and the teaselingrollers may be of any usual orpreferred construction, they need not be more specifically described. Q

E is aoounter-shaft mounted either above or below the drum, as may bemost convenient. In the drawings we have shown i tabove.

As it is desirable to be able to vary the speed of rotation of theteaseling-rollerswe propose to employcone-pulleys, of which the driver Fis mounted on the counter-shaft and is to be belted to a reversed pulleyG, the mounting of which will be hereinafter explained.

I is a driving-pulley, and J a loose pulley, both on the drum-shaft B.

K K are pulleys on the drum-shaft and the courfter-shaft.

L is the composite friction-driver mounted loosely on the drum-shaft,and has the conepulley G secured thereto or'cast in one piece therewith.

' From the above description it will readily be seen that the speed ofrotation of the friction-driver relative to the rotation of the drum maybe varied at the will of the operator within quite wide limits, andwhile we have illustrated this method of varying the relative rapidityof rotationof these parts by cone-pulleys we do not Wish to be limitedthereby, bccau'semany other well-known trains of gearing might besubstituted therefor without in anymanner affecting the character of ourinvention.

The composite friction-driver is located in the same vertical plane withthe pulleys cl cl of the teaseling-rollers, its diameter .being suchthat its periphery will engage with the faces of those pulleys which arenearest the drum-shaft on which the driver is mounted, and in order toinsure a satisfactory frictional driving contact we propose to make thepe riphery of the driver of a somewhat yielding material. In order tofurther provide for all the requirements of our invention we alsopropose to so construct the driver that its diameter may be varied. Inthe illustration which we have given of our invention the compositedriver is formed with four slots M m, opening outward and arranged atabout equal distances around its periphery. As these slotted portions ofthe composite driver and their co-operating parts are substantiallyalike, we will describe them in the singular. The inner portion m of theslot is of less width than the outer portion, so that there areshoulders at m.

N n is an adjusting screw having its lower of the slot;

0 0 are sockets or cups projecting outward from the slide and preferablycast in one piece therewith.

P is a carrier also flanged at its ends to fit the opposite faces of thedriver adjacent to the slot. By preference the depth of the groovesbetween the flanges of the carrier is such that the adjacent edges ofthe slot fit somewhat closely the carriers at the bottoms of thegrooves. Thus the walls of the slot serve as guides to insure that themovement of the carrier toward and from the center of the driver shallbeon practically right lines. We propose to fit up the parts of thesedevices where they slide one upon the other so that, while there shallbe but little lost motion, there will be but little friction. Ordinarilywe prefer to make this carrier centrally open to save weight.

19 p are lugs projecting inward from and ordinarily cast in one piecewith the carrier. These lugs are of less diameter than the sockets 0 0,within which they are adapted to enter centrally, leaving annular spacesbetween the lugs and the sockets to receive spiral springs Q, which arethus held against displacement, and as they each abut at one end againstthe bottom of its socket and at the opposite end against the carrierthey operate to thrust the carrier outward.

R is a segment representing ninety degrees of a circle which isconcentric to the drumshaft, and of course with the shafts of theteaseling-rollers.

S is a supplemental surface applied to the outer face of the segment,and is preferably of some yielding and somewhat elastic material topromote a good frictional contact between the segments and the adjacentpulleys d d. ()ne way we have illustrated of applying this supplementalsurface is in the form of a strap held in proper working posit-ion bymeans of its ends being carried down through slots r 1" (see dottedlines, Fig. 4:) in the ends of the segment, the ends of the strap beingthen carried underneath the segment and fastened to the driver by athreaded pin or set-screw, as is indicated at s s. The outer face of thesegment may be flanged upon both edges, thus forming a trough to receivethe supplemental surface, as at Mr, Fig. 5. We prefer in practice tomake the segment somewhat elastic-. say a thin band of steel-and theirelasticity, coupled with theelasticity of springs Q, will insure apractically uniform frictional con-' tact of the four drivers with eachand every of the pulleys cl d. The thrust of the supplemental surfacesagainst the rollers may beincreased by turning the screw N in the properdirection, after which all of the screws may be locked in position. bythe jam-nuts n n. The segments may be fastened to the carriers byset-screws W, or the carrier may be made in one piece of metal with thesegment, as shall be found most convenient.

We are aware that the teaseling-rollers have been mounted inradially-sliding boxes with springs to thrust them outward to forcetheir elastic pulleys into contact with the inner surface of astationary ring; but we prefer to mount the rollers in boxes which arerigid with the drum, so that they shall always remain at the samedistance from the axis of the drum, so as to engage properly with thecloth and then effect a suitable driving contact by making the centraldriver with a periphery which is radially expansible. .By the wordcentral, as herein used, we mean that the driver is arranged within theseries of pulleys of the rollers. By reference to Fig. 4 it will be seenthatthere are but small spaces between the adjacent ends of thecarriers, and as there will be but a slight additional separation ofthese ends under ordinary adjustment these parts constitute,practically,a continuous driving-surface to engage with the rollers 01. v

We are aware that teaseling-rollers have been provided with beveledfriction-wheels and driven by an inner correspondingly-beveledfriction-wheel, in which case a large part of the thrust of the beveledwheel tends to push the teaseling-rollers endwise, which endthrust tendsto wear rapidly the encircling shoulders of the journals or theirbearings unless some provision is made for otherwise supporting thosejournals against endwise movement, whereas in our construction the IIOpulleys, being cylindrical in form and the driverbeing cylindrical andcapable of having its diameter increased at all points, endthrust uponthe rollers is avoided even though each roller be driven from one endonly. This capability in the driver of having its periphery, whichengages with the pulleys of the teaseling-rollers, increased in diameterby moving part of the composite driver outward from its center is whatis meant by the word erswhen the other parts of the machine are runningat a regular rate.

We are aware that cone-pulleys have been employed in gig-mills forvarying the speed of rotation of the teaseling-rollers; but We believeourselves to be the first to mount one of the cone-pulleys loosely uponthe drum-shaft inside of the bearing which supports the end of thedrum-shaft, connect the cone-pulley rigidly to the driver, which engageswith the teaseling-rollers to produce their axial rotation, and thenbelt that cone-pulley to its driving cone-pulley on the counter-shaft,the counter-shaft being driven directly from the drumshaft, by means ofwhich organization of mechanism a very simple and compact machine may bebuilt.

The operation of gig-mills is so well understood by those acquaintedwith the art of manufacturing cloth that no detailed description need begiven; and it will be readily seen thatby adjustment of the belt on thecone-pulleys a proper speed of rotation of the teaseling-rollers can beeffected.

Although we'haveindicated, generally, the composite friction-driver bythe letter L, yet it is apparent that the carriers and segmentsconstitute parts thereof, these sections being movable outward from theslotted section when it is desired to expand the periphery of thedriver, or, when either of the sections are moved out by the springs, toconform to any irregularity which may exist in the position of theconcentric rollers. It will be readily understood that it is much moredesirable to have this driver made up of parts which are adjustable oneupon another, so that its diameter can be varied, than to mount thejournals of the teaselingrollers each in adjustable bearings, in orderthat they may be moved in or out to insure a proper engagement with thedriver.

It is evident that by crossing the belt which connects the cone-pulleyswith each other the direction of rotation of the teaseling-rollers maybe reversed.

In some of the claims we prefer, for the sake of brevity, to refer tothe friction-driver as engaging with the teaseling-rollers, which ofcourse it does mediately through the pul leys cl d.

' What we claim is- 1; In a gig-mill, the combination,with a rotary.drum and a series of teaseling-rollers concentric to the drum, of acentral rotating and radially-expansible driver arranged to engage atits periphery with the t-easelingrollers, substantially asset forth.

2. In a gig-mill, the combination, with a rotary drum and a series ofteaseling-rollers concentric to the drum, of a central rotatingsectional driver, and means for moving part of the sections outward toengage with the teaseling-rollers, substantially as set forth.

3. In a gig-mill, the combination, with arotary drum and a series ofteaseling-rollers concentric to the drum, of a central rotatingcomposite driver having its driving-surface 4. In a gig-mill, thecombination, witharo tary drum and a series of teaseling-rollersconcentric to the drum, of a central rotating composite driver havingits driving-surface formed of segments adapted to be moved outward toincrease the diameter of the driver, substantially as set forth.

5. In a gig-mill, the combination, with a r0- tary drum and a series ofteasling-rollers concentric to the drum, of a central rotating compositedriver having an inner member provided with slots openingoutwardly,andaseries of segments supported in the slots and thrust against thepulleys of the rollers with a yielding pressure, substantially as setforth.

6. In a gig-mill, the combination, with a rotary drum and a series ofteaseling-rollers concentric with the drum, of a central rotatingcomposite driver provided with a yielding periphery, and means forincreasing the pressthe teaseling-rollers, substantially as set forth.

7. In a gig-mill, the combination, with'a rotary drum and a series ofteaseling-rollers concentric with the drum, of the central rotatingdrivel-having an inner member provided with slots opening outwardly, aseries of carriers supported in the slots, the segments, and theflexible straps outside of the segments and attached at their ends tothe inner member of the driver, substantially as set forth.

8. In a gig-mill, the combination, with the drum-shaft and rotary drum,of a series of teaseling-rollers mounted thereon, provided with pulleysat their projecting ends, a fric tional driver arranged within thepulleys and in the same vertical plane therewith, aconeme oftheperiphery against the pulleys of pulley rigidly connected to androtating with r the driver upon the drum-shaft, a countershaft, meansfor driving the counter-shaft, a cone-pulley uponjthe counter-shaft, anda belt connecting the conepulleys for rotating the friction-driver,substantially as set forth.

9. The composite friction-driver having an inner member formed withslots opening outwardly, in combination with slides fitting the slots,carriers also fitting-in the slots, springs between the slides and thecarriers, and means for adjusting the tension of the springs, sub

stantially as set forth.

10. The composite friction-driver having an inner member formed withslots opening out- IIO wardly and of reduced size at their inner ends, a

forming shoulders, slides fitting in the slots and adapted to engagewith the shoulders, ad justing-screws mounted in the lower ends of theslots to move the slides, the carriers fitting in the slots, the springsbetween the carriers, and the sockets and pins upon opposite sides ofthe springs to prevent their displacement,

substantially as set forth.

In testimony whereof we aftixour signatures in presence of twowitnesses.

Witnesses: JOHN J. PIOKMAN, FRANCIS P. RIVET.

